<template>
  <div class="mui-numbox" data-numbox-min="1">
    <button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
    <input id="test num_box" class="mui-input-numbox" type="number" value="1" @change="countChange" ref="numbox" />
    <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
  </div>
</template>
<script>
import mui from "../../lib/mui/js/mui.min.js";
export default {

  mounted() {
    mui(".mui-numbox").numbox();
  },
  methods:{
    countChange(){
      this.$emit('getcount',parseInt(this.$refs.numbox.value))
    }
  },
  props:["max"],
  watch:{
    //监听属性值
    "max":function(newVal,oldVal){
        mui(".mui-numbox")
        .numbox()
        .setOption("max", newVal);//js api设置最大值
    }
  }
};
</script>